Repair include

[qha]

Include docs, examples and tests in sdist

Merging this would probably mean that i can use the tar.gz from pypi directly and still get tests without rolling my own.

[Rafiot]

Just making sure before I merge it: did you test it and it works for you?

[qha]

I added { path = "tests", format = "sdist" } and ran python3 -m build --sdist . and it had the effect i expected on the produced tarball, i didn't test building a wheel from it though.

[qha]

I've now completed my entire packaging including running pytest tests/test_mispevent.py after adjusting the include statement.